*{
    margin: 0;
    padding:0;
    box-sizing: border-box;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.container{
    width: 352px;
    margin: auto;
}
h2{
    text-align: center;
    margin: 20px;
}
.date,
.week{
    display: flex;
    flex-wrap: wrap;
    border: 1px solid #999;
}
.date span,
.week span{
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    box-shadow: 1px 1px 1px rgba(0,0,0,0.3);
}

.h{
    color: #999999;
}
.today{
    background-color: #0083ff;
    color: #fff;
}